

Controls on Steam Deck map well to what a gamer would use with an XBox controller, and I often use an Xbox controller when playing over HDMI
After making changes to VIDEO settings in-game, like increasing textures, lowering water reflectivity, the resolution changed to something like 480p, and played zoomed on my LCD Steam Deck screen. I wasn't able to change the resolution in the in-game settings as from then on the selection box was disabled. I was forced to uninstall the game and reinstall. After this, I just play with the defaults.
Steam OS crashes occasionally when exiting to desktop. It reboots immediately with a message VERIFYING INSTALLATION prior to boot up.

Surprised how well this ran. It prompted that the AMD GPU driver was out of date on launch but no issues in playability or installation. Reducing quality seems to help greatly.
everything to low
20 fps with everything to the lowest settings, including resolution scale
Proton Experimental